Backlight and liquid crystal display device
US12197075B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Jan 18, 2024 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Jan 18, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133611
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a backlight that includes a plurality of LEDs and a prism sheet disposed opposite to the LEDs, the prism sheet has a first surface opposite to the LEDs and a second surface on the opposite side of the first surface, a first prism having a first base and a first pitch L1 is formed on the first surface, a second prism having a cross section that is scalene triangular in shape having a second base having a length L2, a first base angle θ1, and a second base angle θ2 smaller than the first base angle is formed on the second surface, and L2<L1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.